| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 71 |
| Registration plate issues | 62 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 26 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 25 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 24 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 15 |
| Headlamp aim beam image kick up to the offside |1.6| | 14 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 12 |
| Registration plate lamp issues | 11 |
| Horn not working |1.7.3a| | 11 |
| Rear reflector on motorcycle missing |1.4.1| | 11 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 10 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 10 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 9 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 7 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Offside Front Direction indicator not working |1.5.1c| | 4 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Nearside Front Direction indicators not working |1.5.1c| | 4 |
| Rear Footrest missing |6.2.1a| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Offside Rear Footrest missing |6.2.1a| | 3 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 3 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 3 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Front Direction indicator missing |1.5.1a| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Indicator tell tale not functioning |1.5.2| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Headlamp incorrect colour |1.2.1| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Stop lamp insecure |1.3.3b| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Brake disc contaminated |1.1.14 |b|| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Brake pedal is inoperative |3.1.3c| | 2 |
| Front Direction indicators not working |1.5.1c| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Headlamp aim out of alignment | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator light intensity significantly reduced |4.4.3 |a|| | 1 |
| Offside Front Direction indicator light intensity significantly reduced |4.4.3 |a|| | 1 |
| Direction indicator obviously incorrectly positioned both rear |4.4.3 |a|| | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Brake master cylinder has a seized master cylinder pivot. |3.2.B5| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Offside Rear Direction indicator with a multiple light source more than 1/2 not functioning (4.4.1 (a) (ii)) | 1 |
| Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Rear Brake component leaking fluid |3.2.B4| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Rear Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Brake locking device insecure Front |3.2.A1e| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Offside Front Upper Direction indicator not working |1.5.1c| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Front suspension spring worn and seriously weakened |2.3.2b| | 1 |
| Central Front Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Central Front Stop lamp not working front brake does not operate rear light (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Fuel cap leaking O-ring missing (6.1.3 (b) (i)) | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Lower Motorcycle structure adversely modified |6.1.1b| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| An item not tested |Manual| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Stop lamp not working off rear pedal (4.3.1 (a) (ii)) | 1 |
| Stop lamp not working off front lever (4.3.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Fuel system component insecure |7.2.1b| | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front Brake caliper leaking (1.1.16 (b) (i)) | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Nearside Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Drive chain sprocket excessively loose rear sprocket fitted wrong way around |6.1.7 |c| |i|| | 1 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Brake disc contaminated (1.1.14 (b)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Nearside Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Wheel excessively damaged |5.2.2 |c| |i|| | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear reflector on motorcycle missing |1.4.1| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Steering lock stop maladjusted |2.1.3| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars anticlockwise |2.1.2b| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Front Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Nearside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Offside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear reflector reflecting white to the rear (4.8.2 (a) (ii)) | 1 |
| Chain guard insecure (6.1.7 (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Brake master cylinder has an excessively worn master cylinder pivot. |3.2.B5| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Nearside Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Front Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Centre Rear Upper Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |
| Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Lower Exhaust mounting missing |7.1.1c| | 1 |
| Rear Lower Exhaust excessively deteriorated |7.1.1a| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Steering damper insecure |2.1.2d| | 1 |
| Nearside Footrest insecure (6.2.12 (a)) | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Position lamp not working low beam (4.2.1 (a)) | 1 |
| Offside Upper Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Fuel tank leaking excessively or a risk of fire (6.1.3 (b) (ii)) | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Offside Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Exhaust markings indicating not for road use or similar wording |6.1.2 |c|| | 1 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |